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A118295
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Start with 20 and repeatedly reverse the digits and add 1 to get the next term.
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0
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20, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10
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OFFSET
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1,1
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COMMENTS
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After 1 step enters a cycle of length 9.
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LINKS
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EXAMPLE
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After a(9) = 10 we get a(10) = (reversed digits of a(9)) + 1 = 01 + 1 = 2. - David A. Corneth, Jan 08 2024
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MATHEMATICA
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PadRight[{20}, 100, Range[2, 10]] (* Paolo Xausa, Jan 08 2024 *)
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PROG
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(PARI) a(n) = if(n == 1, return(20)); return(((n-1)%9) + 2) \\ David A. Corneth, Jan 08 2024
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CROSSREFS
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KEYWORD
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nonn,easy,base
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AUTHOR
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Luc Stevens (lms022(AT)yahoo.com), May 14 2006
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STATUS
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approved
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